Improvement in attachments to car-axle boxes



road car.

UNITED STATES DAVID A. HOPKINS, OE JERSEY CITY, NEW JERSEY.

IMPROVEMENT IN ATTACHMENTS TO CAR-AXLE B OXES.

Specification forming part of Letters Patent No. 139,79 1, dated June10, 1873; application filed June 1, 1872.

To all whom. it may concern:

Be it known that 1, DAVID A. HOPKINS, of

Jersey City, in the county of Hudson and State of New Jersey, haveinvented a new and useful Improvement in Wheels and Axles forRailroad-(Jars, of which the following is a specification The drawing isa sectional side "iew of my invention.

This invention relates to a new means of preventing the entrance of dustand dirt into within the hub of the wheel.

A in the drawing represents the axle; B, the wheel; and G thejournal-box of a rail- The hub of the wheel B is recessed to form anannular chamber around the axle for the backwardly-projecting sleeve aof the box to enter. The end of this sleeve is not to be in contact withthe wheel, so as not to be worn away, but merely enters the said chamberfar enough to project the entire length of axle between the box and thewheel. A ring, I), of leather may be applied to the face of the wheel tobear against the sleeve a, as shown, and still more secure theeffectiveness of the invention. I do not desire to confine myself to theparticular method herein described and shown of forming the chamberbetween the wheel and, axle for the reception of the sleeve a, as theformation of said intervening chamber for the purpose specified, andconsequently the combination of wheel and axle forming such chamber withthe sleeve on the box, broadly embraces the improvement con-- templatedby my invention.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- The railroad car wheel and axle, having anintervening annular chamber for the reception of a projecting sleevefrom the journal-box,

as set forth.

' DAVID A. HOPKINS. Witnesses:

T. B. MOSHER,

W. A. GRAHAM.

